BERG, Werner. Minderung von Emissionen aus der Tierhaltung. agricultural engineering.eu, [S. l.], v. 52, n. 5, p. 262–263, 1997. DOI: 10.15150/lt.1997.2514. Disponível em: http://195.37.233.11/landtechnik/article/view/1997-52-5-262-263. Acesso em: 1 mai. 2024.